Home / 791,421.40-1,187,132.10-286,224.40

Finding the Fourth Proportional to 791,421.40, 1,187,132.10 and 286,224.40

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Solution

The fourth proportional to 791,421.40, 1,187,132.10 and 286,224.40 is: 429,336.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,421.40 : 1,187,132.10 = 286,224.40 : x
  2. Step 2: Convert to fraction form
    791,421.40/1,187,132.10 = 286,224.40/x
  3. Step 3: Cross multiply
    791,421.40x = 1,187,132.10 × 286,224.40
  4. Step 4: Simplify right side
    791,421.40x = 339,786,173,043.24
  5. Step 5: Solve for x
    x = 339,786,173,043.24/791,421.40
  6. Step 6: Final answer
    x = 429,336.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.